Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4585#discussion_r138889015
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/calcite/FlinkTypeFactory.scala
---
@@ -211,6 +218,14 @@ class FlinkTypeFactory(typeSystem: RelDataTypeSystem)
extends JavaTypeFactoryImp
canonize(relType)
}
+ override def createMultisetType(elementType: RelDataType,
maxCardinality: Long): RelDataType = {
+ val relType = new MultisetRelDataType(
--- End diff --
There are multiple location where a new type has to be added like
`FlinkRelNode`.
---
